package com.kk.blog.controller.admin;

import com.kk.blog.pojo.Tag;
import com.kk.blog.service.TagService;
import org.apache.ibatis.javassist.NotFoundException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

@Controller
@RequestMapping("/admin")
public class TagController {

    @Autowired
    private TagService tagService;

    @GetMapping("/tags")
    public String tags(@PageableDefault(size = 3,sort = {"id"},direction = Sort.Direction.DESC)
                                    Pageable pageable , Model model){

        Page<Tag> tags = tagService.listTag(pageable);
        model.addAttribute("page", tags);

        return "admin/tags";
    }

    //新增 tag分类方法
    @GetMapping("/tags/input")
    public String input(Model model){

        model.addAttribute("tag",new Tag());

        return "admin/tags-input";
    }

    @GetMapping("/tags/{id}/input")
    public String editInput(@PathVariable Long id, Model model) {
        model.addAttribute("tag", tagService.getTag(id));
        return "admin/tags-input";
    }

        //提交新增 tag分类 方法
    @PostMapping("/tags")
    public String post(@Validated Tag tag, BindingResult result, RedirectAttributes attributes) {

            Tag tag1 = tagService.getTagByName(tag.getName());
            if (tag1 != null) {
                result.rejectValue("name", "nameError", "不能重复添加相同的标签");

            }
            if (result.hasErrors()) {
                return "admin/tags-input";
            }

            Tag t = tagService.saveTag(tag);
            if (t == null) {
                //因为是重定向回到页面，Model 传的值拿不到，
                //就用了 RedirectAttributes 去传递值
                attributes.addFlashAttribute("msg", "新增失败");
            } else {
                attributes.addFlashAttribute("msg", "新增成功");
            }

            return "redirect:/admin/tags";
        }

    @PostMapping("/tags/{id}")
    public String editPost(@Validated Tag tag, BindingResult result, @PathVariable Long id , RedirectAttributes attributes) throws NotFoundException {

        Tag tag1 = tagService.getTagByName(tag.getName());
        if (tag1 != null) {
            result.rejectValue("name", "nameError", "不能重复添加相同的分类");

        }
        if (result.hasErrors()) {
            return "admin/tags-input";
        }

        Tag t = tagService.updateTag(id, tag);
        if (t == null) {
            //因为是重定向回到页面，Model 传的值拿不到，
            //就用了 RedirectAttributes 去传递值
            attributes.addFlashAttribute("msg", "更新失败");
        } else {
            attributes.addFlashAttribute("msg", "更新成功");
        }

        return "redirect:/admin/tags";
    }

    @GetMapping( "/tags/{id}/delete")
    public String delete(@PathVariable Long id,RedirectAttributes attributes){
        tagService.deleteTag(id);
        attributes.addFlashAttribute(  "msg","删除成功");
        return "redirect:/admin/tags";
    }



}
